Plasma Tube Impedance Matcher
Plasma Sonics Ltd. Co. takes a commercial MFJ 949E antenna tuner, and completely reconfigures it for use as a RF excited gas plasma tube impedance matcher. The unit is stripped down to the bare chassis and then rebuilt. All parts that are extraneous to operation are removed. All parts that might be prone to failure are either replaced or highly modified. Many components which are subject to fail on the circuit board are removed. A large dual ring, balanced line output balun ,is mounted internally. External ceramic binding posts are provided for tube wire attachment.
The result is an instrument capable of 100 % duty cycles, while managing 300 watts PEP RF power. This unit has been proven in thousands of hours of use here at Plasma Sonics, and is capable of matching modulation frequencies well in excess of 100 KHz. This plasma tube antenna tuner is ideal for use with Plasma Sonics Ltd. Co.'s OM-1 transmitter and 300 watt PEP amplifier.
Specifications:
Preset to operate at 27.125 MHz. Will match 95% of all plasma tubes with factory settings. A simple internal adjustment is necessary for certain plasma tubes such as phanotrons. This adjustment takes about 10 minutes and is extremely simple to do. No switches are provided for this operation. It has been found that switch contacts for impedance changes will eventually burn and fail.
Do not attempt to operate this antenna matcher at any frequency besides 27.125 MHz! It will not match impedances outside of this frequency band.
Duty Cycle - 100%. Will operate in continuous mode at 300 watts PEP.
If you already have an MFJ 949E Antenna Tuner , and a MFJ 912 External Balun, Plasma Sonics Ltd. Co. will modify your tuner and balun for $150 USD. Please contact us for more information.
Price: Plasma Tube Impedance Matcher with North American wall transformer ( for fan and light operation) - $400 USD